:root{--bg:#f6fbfd;--card:#fff;--ink:#12303d;--muted:#5a7380;--brand:#0a8fb5;--brand-d:#076c89;--accent:#ffb703;--ok:#2a9d5c;--warn:#d1495b;--line:#dbe8ee;--r:14px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand-d)}a:hover{color:var(--brand)}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.15rem;text-decoration:none;color:var(--ink)}.logo span{color:var(--brand)}
nav.main{display:flex;gap:4px;flex-wrap:wrap}
nav.main a{text-decoration:none;color:var(--ink);padding:6px 10px;border-radius:8px;font-size:.95rem}
nav.main a[aria-current=page],nav.main a:hover{background:#e6f5fa;color:var(--brand-d)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:1rem}
@media(max-width:760px){.menu-btn{display:block}nav.main{display:none;width:100%;padding-bottom:10px}nav.main.open{display:flex;flex-direction:column}}
main{padding:28px 0 48px}
h1{font-size:clamp(1.7rem,4.5vw,2.5rem);line-height:1.15;margin:.2em 0 .4em}
h2{font-size:1.4rem;margin:1.6em 0 .5em}h3{font-size:1.1rem;margin:1.2em 0 .4em}
.lead{font-size:1.15rem;color:var(--muted);max-width:720px}
.hero{background:linear-gradient(135deg,#e3f6fb,#fff 60%);border:1px solid var(--line);border-radius:var(--r);padding:28px 22px;margin-bottom:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 18px;margin:14px 0}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.btn{display:inline-block;background:var(--brand);color:#fff!important;text-decoration:none;border:0;border-radius:10px;padding:11px 18px;font-weight:600;font-size:1rem;cursor:pointer}
.btn:hover{background:var(--brand-d)}.btn.alt{background:#fff;color:var(--brand-d)!important;border:1px solid var(--brand)}
form.signup{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
form.signup input[type=email]{flex:1 1 220px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:1rem}
.hp{position:absolute;left:-9999px}
.msg{margin-top:8px;font-size:.95rem}.msg.ok{color:var(--ok)}.msg.err{color:var(--warn)}
.est{display:inline-block;background:#fff4d6;color:#7a5600;border-radius:6px;padding:1px 7px;font-size:.78rem;font-weight:700;letter-spacing:.02em;vertical-align:middle}
.small,.src{font-size:.85rem;color:var(--muted)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff;margin:10px 0 6px}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:.93rem}
th,td{padding:9px 11px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#f0f8fb;font-weight:700;white-space:nowrap}tr:last-child td{border-bottom:0}
.price{font-weight:700;white-space:nowrap}.was{text-decoration:line-through;color:var(--muted);font-weight:400;margin-left:4px}
.pill{display:inline-block;border-radius:999px;padding:1px 9px;font-size:.8rem;font-weight:700}
.pill.yes{background:#e3f6ea;color:#1d6b3f}.pill.no{background:#fde7ea;color:#9b2335}.pill.partial{background:#fff4d6;color:#7a5600}
.calc{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:860px){.calc{grid-template-columns:1.05fr .95fr}}
label{display:block;font-weight:600;margin:12px 0 4px}
input[type=number],select{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;font-size:1rem;background:#fff}
fieldset{border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:12px 0}legend{font-weight:700;padding:0 4px}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:400;margin:6px 0}.check input{margin-top:4px}
.results .big{font-size:1.8rem;font-weight:800;color:var(--brand-d)}
.results dl{display:grid;grid-template-columns:1fr auto;gap:6px 12px;margin:0}.results dt{color:var(--muted)}.results dd{margin:0;font-weight:700;text-align:right}
.warn{background:#fff7f7;border:1px solid #f3c7cd;border-radius:10px;padding:10px 12px;font-size:.93rem}
.note{background:#f0f8fb;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:.93rem}
.levels{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}
.levels button{border:1px solid var(--brand);background:#fff;color:var(--brand-d);border-radius:999px;padding:7px 13px;font-size:.92rem;cursor:pointer}
.levels button[aria-pressed=true]{background:var(--brand);color:#fff}
ul.tick{padding-left:1.1em}ul.tick li{margin:4px 0}
.todo{background:#fff4d6;border:1px dashed #d9a400;border-radius:8px;padding:8px 10px;font-family:ui-monospace,monospace;font-size:.88rem;color:#6b4c00}
footer.site{border-top:1px solid var(--line);background:#fff;padding:22px 0;font-size:.88rem;color:var(--muted)}
footer.site a{color:var(--muted)}footer.site nav{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:8px}